Seam for sewed articles



March 1, 1927. c. F RUBEL ET AL SEAM FOR SEWED ARTICLES Filed July 12,1926 awn/tors Patented Mar. 1, 1927.

UNITED STATES PATENT OFFICE.

CHARLES F. RU 'BEL END FRANK KUCERA, OF CHICAGO, ILLINOIS, ASSIGNORS TOUNION SPECIAL MACHINE COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OFILLINOIS.

SEAINI FOR SEWED ARTICLES.

Application filed July 12,

The invention relates to new and useful improvements in seams for sewedarticles, and more particularly to a corded seam.

An object of the invention is to provide a corded seam, wherein the cordis secured to the material by stitching threads alone, which stitchingthreads are so positioned that when the seam is placed under severelateral strain, the holding threads covering the cord will not stretchor give to any material extent.

In the drawings which show by Way of illustration one embodiment of theinvention--- Figure l is a plan View of the improved seam taken from theright or face side of the seam;

Fig. 2 is a bottom plan view of the same;

Fig. 3 is a perspective view of the stitching threads, showing themanner of interlocking the same in the forming of the seam, and

Fig. 4 is a sectional view on the line 44' of Fig. 1. y

In carrying out the invention, a cord is secured to the fabric solely bystitching. This is accom lished by placing the cord against the un erside of the fabric, passing needle threads through the fabric atopposite sides of the cord, and passing the looper thread through theneedle thread loops in such a way that the looper thread extends acrossthe cord in a direction at right angles to the length of the cord, saidlooper thread being locked by the needle thread loops along the side ofthe cord opposite from that at which the looper thread is laid. By thisarrangement, any lateral strain brought on the seam will be a straightpull on the looper thread which is anchored to the needle thread loopsat opposite sides of the seam, and the looper thread will extend in theline of the strain and not at an angle thereto, so that there can be nogiving or straightening out of the threads when the strain is exertedthereon.

Referring more in detail to the drawings, we have shown our improvedseam as embodied in a fabric indicated at 1, which is preferably ofleather. Laid along the under side of the fabric is a cord 2. The fabricis bent into a ridge indicated at 3, and the cord lies in a recess onthe under side of the material formed by this ridge. A needle thread 4is formed into 'a series of loops 5, 5 which 1926. Serial N0. 121,919.

are passed down through the material at one side of the ridge 3 and atone side of a the cord 2. A needle thread 6 is formed into a series ofloops 7, 7 which are passed down through the fabric at the other side ofthe ridge 3 and the cord 2. A looper thread 8 is formed into a series ofloops 9, 9. Each loop is passed first through a needle thread loop 5 andthen across the cord, and through a needle thread loop 7. The end 10 ofthe looper thread loop 9 is carried over to the next stitch formation,andthe needle thread loop 7 at the right-hand side of the seam as shownin Fig. '4, only is passed through this looper thread loop. It will beclear from Figures 2 and 3 that the looper thread loop is anchored bythe needle thread loops at points directly opposite each other onopposite sides of the cord 2. The strands of the looper thread loopextend across the cord in a direction at right angles to the length ofthe cord. The improved seam is particularly adapted for moccasins, andis used not only as an ornamentation, but also to strengthen themoccasin and to imitate a seam connecting the upper to a vamp. When soused, the seam is subject to the lasting strain during the formation ofthe moccasin. This lasting strain on the seam is in a direction at rightangles to the length of the seam, that is, the length of the cord, andthe strain is therefore in the same direction as the strands of thelooper thread loop which extends across the seam from one needle loop tothe other needle loop. When this strain is exerted upon the seam, thereis no movement of the crossing threads into a straight position, as theyare already straight, and therefore. the entire stretching strain islengthwise of the looper thread loop. It is true that the looper threadafter passing throughthe needle thread loop 7, extends lengthwise of theseam, but the needle thread loops 7, 7- are anchored in the material sothat the-strain on'the end of the looper thread loop is a direct pull onthe looper thread loops, and not a tendency to pull crosswise the seam,as would be the case, provided the looper thread loop is anchored byboth needle thread loopsas is the usual manner of securing the looperthread ina twin needle stitch. The manner of making this seam forms thesubject-matter of a comof even date herewith.

It is obvious that minor changes in the details of construction may be'made Without departing from the spirit of the invention as set forth inthe appended claim.

Having thus described the invention, what We claim as new and desire tosecure by Letters-Patent, is

A seam for sewed articles comprising a body fabric. having a ridgetherein, a cord located in the recess on the under face of the fabricformed by said ridge, stitching threads disposed along the right side ofthe fabric and formed into directly opposed thread loops extendingthrough the fabric In testimony whereof, We afiix our signa- 25 tnres. v

CHARLES F. RUBEL. FRANK KUCERA.

